Here's a reference table of Throwable weapons, sorted
by attack power, with bonus information listing where to get them
in unlimited quantity (if possible). All methods listed are the ones
that I consider the least troublesome to use of those available
at the end of the game, except where none exist then.

Methods marked with an asterisk (*) only
apply before the Major Plot Spoiler. There is no way to stock up
on these items afterward.